The new TOHO J4 is a 48 x 48 mm microprocessor-based digital temperature controller that has recently added features. The J4 has been designed to meet the needs of users seeking high performance on a small budget.
The device has one main PID relay (or SSR drive) output with two additional alarm relays and is intended for use in processing machines that require three relay outputs. One output starts the machine at a predetermined value, the main output controls the heater banks and the third output can be set to control a cooling system. This arrangement is suitable for plastic injection machines, gluing machines and other similar systems.
The unit can be programmed as a heat/cool controller with additional alarm. The heat/cool arrangement suitable for combustion equipment suppliers who require the modulation of motorised valves and gas throttle controls. Both main outputs are full self tuning PID control in both directions with the third output acting as an alarm. It includes an advanced self- and auto-tuning function and has a built-in timer to automatically switch off outputs or give an alarm after a required period of running time. This unit enters the market only marginally more expensive that the TOHO CN-40 controller - which has less features, and is reported to be a popular choice for such applications.
Network-capable remote relay system with flexible channel assignment Phoenix Contact
PLCs, DCSs & Controllers
Phoenix Contact has launched a modular PLC-Interface Ethernet Gateway remote relay system with up to 56 configurable I/O channels, multi-protocol support including Profinet Class C and S2 redundancy, and compatibility with established controller software for straightforward network integration.
Read more...Seven checks before replacing an obsolete industrial control component
PLCs, DCSs & Controllers
An obsolete control component rarely fails in isolation. Before ordering an exact spare, manufacturer successor or engineered alternative, maintenance and procurement teams should work through seven checks to define the problem properly and avoid a costly mismatch.
Read more...Loop signature Part 2-6
PLCs, DCSs & Controllers
This instalment of the Loop Signature series introduces frequency plot theory as a foundation for understanding process dynamics, explaining Bode plots, dynamic gain, phase lag and their relationship to control loop tuning.
Read more...The rise of software-defined brownfield automation Schneider Electric South Africa
PLCs, DCSs & Controllers
Schneider Electric’s EcoStruxure Automation Expert is enabling brownfield operators to modernise incrementally, decoupling control logic from hardware to bridge legacy equipment and future-ready operations without disrupting production.
Read more...Upgrading alarm systems for critical industries Omniflex Remote Monitoring Specialists
PLCs, DCSs & Controllers
Omniflex’s OMNI16R alarm annunciator platform provides a direct replacement for legacy CSA systems such as MPAS 90 and SA9100, enabling operators in oil and gas, nuclear and power generation to modernise alarm infrastructure without sacrificing the clarity required for safe operations.
Read more...How DCS can step off the hardware obsolescence treadmill Schneider Electric South Africa
PLCs, DCSs & Controllers
Schneider Electric argues that virtualising DCS environments breaks the cycle of hardware obsolescence, giving plant operators a smarter path to lifecycle modernisation without production disruption.
Read more...Loop signature Part 2-6
PLCs, DCSs & Controllers
The Loop Signature series turns to frequency plot theory, explaining Bode open-loop plots and how dynamic gain, phase lag and crossover frequency can be extracted from test data to inform more accurate control loop tuning.
Read more...PC-based control in surgery Beckhoff Automation
Editor's Choice PLCs, DCSs & Controllers
Researchers at the University of Basel are using Beckhoff PC-based control technology to develop a miniature laser robot for minimally invasive bone surgery.
Read more...How the DCS can step off the hardware obsolescence treadmill Schneider Electric South Africa
PLCs, DCSs & Controllers
Ageing servers and unsupported operating systems are quietly eroding the stability of process plants that rely on distributed control systems. Kobus Vermeulen of Schneider Electric explains how virtualising the DCS environment can break the hardware obsolescence cycle without disrupting operations.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version